Mechanism for operating doors



A. R. NEALE. MECHANISM- FOR OPERATING DOORS.

APPLICATION FILED NOV.28. l9!!! Patented Aug. 22, 1922.

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liLuenfor 45M fiM A A A. R. NE'ALEL MECHANISM FOR OPERATING DOORS.- APPLICATION FILED NOV.28. I9l9.

Patented Aug. 22, 1922 2 SHEET$SHEET 2.

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Wall/I4 ALVlN n. NEALE, or Anni, IowA.

MECHANISM non opaaarcma nooasa Y X Specification of Letters Patent.

Application filed. November 28', 1919. Serial No. 341,283.

T all to item it may 0012 cam Be it known that I, ALvIN B. Nnann, a

' citizen 'ofthe United States, residing at Adel, in the county of Dallas, State of Iowa, have invented a new and useful Mechanism for Opera-ting Doors, of which the following is the specification. I

This invention relates to door operating mechanism, and especially that designed to operate double. doors, used in garages, livery barns, etc. In garapp doors it is desirable to have means whereby the outside doors may be opened and closed without the operator leaving the office.-

' It is therefore the object of my invention to provide a door of simple, durable and inexpensive construction so arranged that a pairof doors may be simultaneously operated in a doorway by a single lever spaced at any convenientdistance from said doors. It is more particularly the objectof my invention to provide an improved meansfor mounting and operating double doors, such as are used in garages.

These and other objectswillb'e apparent to those skilled in art and need not be mentioned in detail.

I attain these objects by the mechanism illustrated in the accompanying drawings, in which: i

Fig. 1 is a sideelevation of my door operating mechanism showing a portion of the room in which the doors are mounted in section.

Fig. 2 is a diagrammatic view showing the manner in which the operating cables are mounted on the sheaves.

Fig. 3 is a detail sectional view taken on the line 33 of Fig. 1.

Fig. 4 is a detail view showing the lower portion of one of the operating shafts in section and the manner of pivotally mounting the same.

Fig. 5 is a detail side elevation of one of the operating sheaves and showing the manner in which it is mounted.

Fig. 6 is a detail view showing one of the adjusting devices.

Fig. 7 is a sectional view taken on the line 7-7 of Fig. 5.

I have used the reference numeral 10 to indicate the door frame which is of the ordinary construction and'the' numeral 11 to lndlcate a support whlch is placedacross the }O1Si3$ of the ceiling and isdesigned to carry thrust bearing members 12.- Each of tnese caring members 12 1s designed to receive a vertical shaft 15 so mounted as to lie adjacentto the sides of the door openmg in the frame 10. Thelower end of each of the shafts 18 is provided with a pin 14 secured to the. floor by-mea'nsof a bracket 15. The pin extends up into the shaft 13 which may be formed hollow atthe lower end or preferably, ahollow: pipe. The upper end of each of the shafts 13 is provided with a sheave 16, each ofwhich'is provided with grooves 17 and 18. A notch 19 is pro+ vided in: the, rib between saidgrooves as illustrated in Fig. 7. This notch19 is for the purpose of providing means for preventing the cables 20 from slipping in the.

grooves, and is accomplished by passing the cablein'the groove 17 then througlrthe notch.

19 into the groove 18,- thereby forming kink I in the cable at'the portion that lies in the notch 19., By this arrangement it will be seen that, when the cable is passed onc'e' aroundthe' sheave, the-cable will not slip when a' greater pull is applied to one cable The operation of these:

than the other; sheaves will be more fully set forth.

A door 21 is securedtoeach" of theisliaitts 13, by means of strap irons 22. Thesestrapsv are passed around the shafts 13 asillus trated' in Fig. 3 and-secured to the doors by: means of rivets 23. A' rivet 21iis passed.

through'leach of the strap irons 22 and through the shafts 13 for the purpose of preventing the straps from slipping on said shafts and at the same time carry the weight of the doors. When the doors are in a closed position they are in line with each other, as clearly shown in Fig. 1.

By this construction it will be seen that the weight of the doors will be carried by the sheaves engaging the bearing members 12, the pins 14L being merely for the purpose of forming pivots for the lowerends of the shafts. V

For operating the doors 21, I have provided a third vertical shaft 25 mounted similar to those already described but in a position adjacent to an inner wall of an ad- Patented Aw.

joining room or any other convenient place. The said shaft 25 is provided with a handle 26 which may be extended through a slot 27 in the wall so that the said handle, may be operated from inside of an adjoining room to the one in which the doors are located.

I The upper end of the shaft 25 is provided passing through the notches 19, as above described. In the cable extending between the sheaves 80 and 28, and 28 and 29, I have provided turn-buckles 31 and 32 which are for the purpose of taking up slack in the cables and also for the purpose of aligning the doors 21 relative to each other.

Itwill be seen that if the turn-buckle 32 is loosened and the turn-buckle 31 tightened, the left hand door will be rotated in an anticlockwise direction, or if it is desired to move the said door in the opposite direction it may be accomplished by merely reversing the direction of'the rotation of the turnbuckles. By rotating both of the turnbuckles in the same direction, the cable may be tightened.

Thus it will be seen I have provided a simple but effective method of aligning the doors and at the same time taking up the slack in the cable. To operate the doors, the

' operator grasps the handle 26 and moves it to a position shown in dotted line in Fig. 2 which will cause the cable to move in the direction of the arrows, and the doors swing to the position shown in dotted lines. This n1ay be accomplished without the operator leaving his position in the ofiice.

Thus it will be seen I have provided doors which will hang rigidly without sagging, due to the fact that they are secured to the shaft 13 by means of the straps 22, and the fact that the shafts are of a considerable length, the operating mechanism may be easily and readily adjusted and at the same time the doors may be properly brought in alignment with each other when in a closed position, by means of the turn-buckles.

I claim:

1. A door opening device comprising door operating shafts and a manually operated shaft, means for operatively mounting said shafts, a double grooved sheave having a communicating groove on corresponding ends of each of said shafts, a cable for operatively connecting all of said shafts by passing part way around in one of the groovesof each sheave, thence through he communicating groove to the opposite groove, substantially as described and for the purpose stated.

2. The combination of a frame having a door opening, a vertical shaft mounted adjacent to each side of said door opening,-

means for rigidly clamping the edge of a door adjacent to each of said shafts, a thrust bearing above said door opening for rotatively mounting each of said shafts and carrying-the weight ofsaid doors, an operating shaft parallel to said vertical shaft, a handle on said operating shaft, a double grooved sheave having a communicating groove, on the upper end of each of said shafts and an operating cable designed to pass part way around in one of said grooves, thence through the communicating groove to the opposite groove, substantially as described and for the purpose stated.

3. A door opening device comprising door operating shafts and a manually operated shaft, means for operatively mounting said shafts, a double grooved sheave having a communicating groove on corresponding ends of each of said shafts, a cable for operatively connecting all of said shafts by passing part way around in one of the grooves of each sheave, thence through the communicating groove to the opposite groove, the said cable being provided with an adjusting means between two sets of said sheaves, substantially as described and for the purpose stated.

ALVIN R. NEALE. 

